The original message in this thread was from Geoffrey Isaac Collins asking about census records for both Zabludow and Bialystok. Larry provided information from Miriam Weiner's Routes to Roots Foundation Archival inventory for census type records at the Belarus Archive in Grodno for Bialystok.

JRI-Poland has a project to extract the information is all Jewish record for towns now in Poland that were formerly in Grodno Gubernia. This includes Bialystok, Zabludow, and 26 other towns that are all near Bialystok. There are no vital records for these towns in the Grodno Archive. The Grodno Archive has revision lists, supplementary lists, tax lists, lists of Jewish soldiers, lists of Jewish farmers, and lists of non-permanent residents. 

For Bialystok, there are about 9,000 records covering years from 1822 through 1891. For Zabludow, there are about 550 records covering years from 1829 through 1874,

I am currently on the road. If you are interested in learning more, please contact me at mark@... and please be patient. I will reply after returning home and catching up.

Mark Halpern
JRI-Poland Bialystok Area Coordinator